From bugzilla@redhat.com Mon Jan 13 19:46:38 2003 From: bugzilla@redhat.com To: redhat-watch-list@redhat.com, redhat-announce-list@redhat.com Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com Date: Mon, 13 Jan 2003 10:29 -0500 Subject: [Full-Disclosure] [RHSA-2003:006-06] Updated libpng packages fix buffer overflow [ The following text is in the "iso-8859-1" character set. ] [ Your display is set for the "US-ASCII" character set. ] [ Some characters may be displayed incorrectly. ] --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated libpng packages fix buffer overflow Advisory ID: RHSA-2003:006-06 Issue date: 2003-01-13 Updated on: 2003-01-09 Product: Red Hat Linux Keywords: libpng buffer overflow flaw:buf Cross references: Obsoletes: RHSA-2002:151 CVE Names: CAN-2002-1363 --------------------------------------------------------------------- 1. Topic: Updated libpng packages are available that fix a buffer overflow vulnerability. 2. Relevant releases/architectures: Red Hat Linux 6.2 - i386 Red Hat Linux 7.0 - i386 Red Hat Linux 7.1 - i386 Red Hat Linux 7.2 - i386, ia64 Red Hat Linux 7.3 - i386 Red Hat Linux 8.0 - i386 3. Problem description: The libpng package contains a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files. PNG is a bit-mapped graphics format similar to the GIF format. Unpatched versions of libpng 1.2.1 and earlier do not correctly calculate offsets, which leads to a buffer overflow and the possibility of arbitrary code execution. This could be exploited by an attacker creating a carefully crafted PNG file which could execute arbitrary code when the victim views it. Packages within Red Hat Linux, such as Mozilla, make use of the shared libpng library. Therefore, all users are advised to upgrade to the errata packages. For Red Hat Linux 8.0 the packages contain libpng 1.2.2 which is not vulnerable to this issue. For Red Hat Linux 6.2, 7, 7.1, 7.2 and 7.3 the packages contain libpng 1.0.14 with a backported patch that corrects this issue. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. 5. RPMs required: Red Hat Linux 6.2: SRPMS: ftp://updates.redhat.com/6.2/en/os/SRPMS/libpng-1.0.14-0.6x.4.src.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/libpng-1.0.14-0.6x.4.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/libpng-devel-1.0.14-0.6x.4.i386.rpm Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/en/os/SRPMS/libpng-1.0.14-0.70.2.src.rpm i386: ftp://updates.redhat.com/7.0/en/os/i386/libpng-1.0.14-0.70.2.i386.rpm ftp://updates.redhat.com/7.0/en/os/i386/libpng-devel-1.0.14-0.70.2.i386.rpm Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/libpng-1.0.14-0.7x.4.src.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/libpng-1.0.14-0.7x.4.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/libpng-devel-1.0.14-0.7x.4.i386.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/libpng-1.0.14-0.7x.4.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/libpng-1.0.14-0.7x.4.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/libpng-devel-1.0.14-0.7x.4.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/libpng-1.0.14-0.7x.4.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/libpng-devel-1.0.14-0.7x.4.ia64.rpm Red Hat Linux 7.3: SRPMS: ftp://updates.redhat.com/7.3/en/os/SRPMS/libpng-1.0.14-0.7x.4.src.rpm i386: ftp://updates.redhat.com/7.3/en/os/i386/libpng-1.0.14-0.7x.4.i386.rpm ftp://updates.redhat.com/7.3/en/os/i386/libpng-devel-1.0.14-0.7x.4.i386.rpm Red Hat Linux 8.0: SRPMS: ftp://updates.redhat.com/8.0/en/os/SRPMS/libpng-1.2.2-8.src.rpm i386: ftp://updates.redhat.com/8.0/en/os/i386/libpng-1.2.2-8.i386.rpm ftp://updates.redhat.com/8.0/en/os/i386/libpng-devel-1.2.2-8.i386.rpm 6. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 81be743693b70221bc3d539279a4c2dc 6.2/en/os/SRPMS/libpng-1.0.14-0.6x.4.src.rpm dc976ce0f9f5a0e6afacf87978e10fdd 6.2/en/os/i386/libpng-1.0.14-0.6x.4.i386.rpm f16e83385b2c4d512eefba519504a44e 6.2/en/os/i386/libpng-devel-1.0.14-0.6x.4.i386.rpm 65fde055efb4caeca9c847f2b5036a78 7.0/en/os/SRPMS/libpng-1.0.14-0.70.2.src.rpm 5d7db9565eed1a785fd7a03b75d221a5 7.0/en/os/i386/libpng-1.0.14-0.70.2.i386.rpm c98488ae2ad9edaba3ce19d13ecdea87 7.0/en/os/i386/libpng-devel-1.0.14-0.70.2.i386.rpm 00d5ba5b22ba86373f5b20cec920f72d 7.1/en/os/SRPMS/libpng-1.0.14-0.7x.4.src.rpm 7b1507aa0d479257e888c267deefe757 7.1/en/os/i386/libpng-1.0.14-0.7x.4.i386.rpm 723342e918bcfe3343526a9cc483ba3d 7.1/en/os/i386/libpng-devel-1.0.14-0.7x.4.i386.rpm 00d5ba5b22ba86373f5b20cec920f72d 7.2/en/os/SRPMS/libpng-1.0.14-0.7x.4.src.rpm 7b1507aa0d479257e888c267deefe757 7.2/en/os/i386/libpng-1.0.14-0.7x.4.i386.rpm 723342e918bcfe3343526a9cc483ba3d 7.2/en/os/i386/libpng-devel-1.0.14-0.7x.4.i386.rpm a5da2a1a78fc0a0c5cd5e20a8168548c 7.2/en/os/ia64/libpng-1.0.14-0.7x.4.ia64.rpm e445bca70299635ac6f05c2b7b55ca20 7.2/en/os/ia64/libpng-devel-1.0.14-0.7x.4.ia64.rpm 00d5ba5b22ba86373f5b20cec920f72d 7.3/en/os/SRPMS/libpng-1.0.14-0.7x.4.src.rpm 7b1507aa0d479257e888c267deefe757 7.3/en/os/i386/libpng-1.0.14-0.7x.4.i386.rpm 723342e918bcfe3343526a9cc483ba3d 7.3/en/os/i386/libpng-devel-1.0.14-0.7x.4.i386.rpm 3969141f549de973eb1e0f8e0730e22e 8.0/en/os/SRPMS/libpng-1.2.2-8.src.rpm 65f374f46b9b03de4c162ef0052a6fe1 8.0/en/os/i386/libpng-1.2.2-8.i386.rpm 55f87f85687d29e92a6cc4e9bc7dd5cd 8.0/en/os/i386/libpng-devel-1.2.2-8.i386.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at http://www.redhat.com/about/contact/pgpkey.html You can verify each package with the following command: rpm --checksig -v If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command: md5sum 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1363 8. Contact: The Red Hat security contact is . More contact details at http://www.redhat.com/solutions/security/news/contact.html Copyright 2003 Red Hat, Inc. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html